Thermosiphon Passive Solar Water Heater

Additional Information and Specifications: A collector panel and a (typically) 80 gallon storage tank are installed on the roof, typically facing South. The panels contain either water or food grade glycol (for freezing climates), which, when heated by the sun, rises up to circulate through the insulated ceramic lined water tank, heating the water.

The system can act as a stand alone water heater, as the tank contains its own heating element, or the system can act as a non-electric pre-heater to a standard electric or gas water heater in the home. Savings in water heating cost exceed 90 percent in Florida, saving over 20 percent of the typical electric bill.